Science Fair Project Encyclopedia
Malic acid has melting point 128°C to 130°C and molecular weight of 134.09.
Apples contain malic acid, which contributes to the sourness of a green apple.
Malic acid, when added to food products, is denoted by E Number E296.
There is another dicarboxylic acid with the similar name maleic acid , which has the formula cis-HOOC-CH=CH-COOH . Maleic acid is the cis stereoisomer of fumaric acid, which is the trans version. These compounds are also not to be confused with malonic acid which is a dicarboxylic acid with the formula HOOC-CH2-COOH.
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